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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 26 — Sep. 10, 2011
  • pp: 5169–5177

Diffractive incremental and absolute coding principle for optical rotary sensors

David Hopp, Christof Pruss, Wolfgang Osten, Jonathan Seybold, Karl-Peter Fritz, Tim Botzelmann, Volker Mayer, and Heinz Kück  »View Author Affiliations

Applied Optics, Vol. 50, Issue 26, pp. 5169-5177 (2011)

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Rotary sensors are an essential component in numerous applications where a rotation movement has to be detected. With optical encoders, a high angular resolution can be achieved. As a disadvantage, the resolution enhancement is associated with increasing cost. To overcome this issue, a coding principle is presented that uses a diffractive solid measure on a microstructured plastic disc. Like a DVD, this encoder disc can be manufactured in a cost effective injection molding process. For this approach, a differential incremental code, as well as an absolute code, has been developed.

© 2011 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(230.0040) Optical devices : Detectors
(230.0230) Optical devices : Optical devices
(230.1950) Optical devices : Diffraction gratings
(230.4685) Optical devices : Optical microelectromechanical devices
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Diffraction and Gratings

Original Manuscript: April 20, 2011
Revised Manuscript: July 14, 2011
Manuscript Accepted: July 14, 2011
Published: September 9, 2011

David Hopp, Christof Pruss, Wolfgang Osten, Jonathan Seybold, Karl-Peter Fritz, Tim Botzelmann, Volker Mayer, and Heinz Kück, "Diffractive incremental and absolute coding principle for optical rotary sensors," Appl. Opt. 50, 5169-5177 (2011)

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